#191B81

#191B81

Color Values

HEX

#191B81

RGB

25, 27, 129

HSL

238.8, 67.5%, 30.2%

HSV

238.8, 80.6%, 50.6%

CMYK

80.6%, 79.1%, 0.0%, 49.4%

OKLCH

0.3109 0.1637 271.0

Properties

Cool Dark Nearest: midnightblue

Color Harmonies

Complementary

#191B81

#817F19

Analogous

#194F81

#4B1981

#191B81

Triadic

#191B81

#81191B

#1B8119

Split Complementary

#191B81

#814B19

#4F8119

Tetradic

#191B81

#81194F

#817F19

#19814B

Color Blindness Simulation

Original

#191B81

Protanopia

#1A1A68

Deuteranopia

#1A1A62

Tritanopia

#195551

Achromatopsia

#222222

CSS Usage

background-color: #191B81;
color: #191B81;
border-color: #191B81;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F3F3FC
100
#E3E3F7
200
#C3C4F3
300
#989AEB
400
#6164E0
500
#292DD6
600
#2124AB
700
#1B1D89
800
#15166B
900
#13144E
950
#0C0D31

Contrast Checker

Text on white

13.86:1

AA Pass AAA Pass

Text on black

1.52:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026